<ul>
  <li>BobChat</li>
  <ul>
    <li><a href="/tutorials/python/BobChat/v0.1/">v0.1</a>
      <ul>
        <li><a href="/tutorials/python/BobChat/v0.1/server.shtml">Server</a></li>
        <li><a href="/tutorials/python/BobChat/v0.1/client.shtml">Client</a></li>
      </ul>
    </li>
    <li><a href="/tutorials/python/BobChat/v0.2/">v0.2</a></li>
    <li><a href="/tutorials/python/BobChat/v0.3/">v0.3</a></li>
  </ul>
</ul>
